Pressure and sealing device for containers



Nov. 1, 1938. w. CfPARROTT' 2,134,985

PRESSURE AND SEALING DEVICE FOR CONTAINERS Filed Nov. 15, 1936 2Sheets-Sheet 1 Nov. 1, 1938. w. c. PARROTT PRESSURE AND SEALING DEVICEFOR CONTAINERS Filed Nov. 16, 1936 2 Sheets-Sheet 2 A QQV m 8 Z a 5 2 2W 6 7 V 3 3 .I 2 fl:- m q 2 I 1 6 6 5 2% /U 3 M /W- 3 E///// 2 2 5 9. w6

Patented Nov. 1, 1938 9 UNITED STATES PATENT OFFICE PRESSURE AND SEALINGDEVIGE' FOR CONTAINERS William C. Parrott, Stamford, Conn.

Application November 16, 1936, Serial No. 110,989 7 3 Claims. (01.220-57) My invention relates to a pressure and sealing overhangingportion 3 to allowfor the insertion device for containers and I declarethe following of the removable cover 6. to-be a full, clear, concise andexact description Removable cover 6 is oval shaped to conform thereofsuficient to enable anyoneskilled in the to the'oval shaped opening 5made by rim 3.

5 art to which it appertains to make and use the Ordinarily it is turnedat right angles to rim 3,

same, reference being had to the accompanying forming oval shapedopening 5 and tilted for indrawings in which like referencecharacters'resertion within container I. fer to like parts throughoutthe specification. A groove I0 is formed adjacent the periphery Theobject of the invention is to providea on the upper side of cover 6 toallow for the in- 10 pressure and sealing device for use moreparticusertion or mounting of a rubber gasket I I which 10:

y 0n insecticide Sprayers, q Sp ay contacts a ridge I2 formed on theunder surface tanks, beer containers, such as thermo-jugs, steel f ri 3adjacent opening 5, whereby to form a drums and barrels, which utilizesair pressure for hermetically sealed joint when said cover 6 is for n thp y h r h will be p rf c forced upward into locked or sealing position.

y Safe against eXDlOSiOHS- An upstanding neck or throat portion I4 is.51

Heretofore, 0H p y of this type, the reformed integral with or otherwisesecured to mova p portion or cover as not been suficover 6. Neck I4 isrecessed at diametrically ciently Secured in position to prevent theopposite sides to provide open aligned recesses pressure within thecontainer from forcing it off l5, l5 for th play of a bridge member sberth 0 into space usually with dangerous results to the jnaftermentioned. Furthermore, th upper user and bystanders' outer surface ofthroat I4 has external screw The present structure disposes theremovable threads n for mounting a cap hereinafter top portion or coverwithin the container and mentioned.

forces it upward against the contiguous upper The means for holdingremovable cover 6 in 25 Well of the container for sealing m sealedposition embodies a bridge member or 29 The dev is an improvement,principally by locking bar I6 which is arched. Its free endsSimplification of parts OVBI my former COIlStTuQ- 22, 22 rest insuitably formed countersunk retion illustrated and described in LettersPatent, 095595 or k t :3 23 d in overhanging rim 5 issued to me August28,,1934- 3, whereby to hold said bridge member I6 and h Object Will beunderstood y referring to cover 6 from turning relative to rim 3. Thernidthe drawin s in which: dle portion of bridge member I6 is enlargedand Fi 1 is a perspec iv v w of he p portion fitted at 24 to theinterior of throat l4. ofthe container showing the sealing member ap-Bridge member I5 i forced d d against plied thereto. the tension of acoiled spring 25 by cap 20 herein- 2 1s a detall Showmg perspectlve ofafter described. The lower end of coiled spring Ei femevajble memploye'd v 25 is projected and held in an aperture made in 3 1S adetail Vlew showme perspecnve'of the outside surface of the Wall ofthroat I4. The a m?mber employed spring coils about the outside surfaceof throat 4 15 an emarged fiagmentary w Showmg- I4. Its upper end restsagainst the lower surface 40 a central vertical section of the device,parts of bridge member "5, whereby to f ce said bridge 40 broke aymember I6 normally upward.

Fi 5 is a detail v of a perspective of a The upper surface of bridgemember, Is is enbridge member hployed. gaged by a cam skirt or dependingflange 26 6 is a detail e Showing a Perspective 01 formed integral withthe upper portion of cap 29.

p member employed and looking at the under- Cap 20 is spaced from thecontiguous surface of side thereof. neck or throat I4' by a shoulderformed at 36 in Fig. 7 is a detail view. cap 20, whereas the uppermostpart of cap 20 is Referring more particularly to the drawings, reducedin diameter at 32. Internal screw threads the device is shown assembledto the top of an in- 33 are formed on the inner surface of theuppersecticide container I having handles 2, 2 and a most part whichcooperate with the screw'threads top rim overhanging portion 3 welded orother- I! in cap 20, whereby to draw removable cover wise secured tothe-lateral cylindrical wall 4 upwards against overhanging rim 3 intosealing of the container I. An oval shaped central openposition.

ing 5 is provided by the top rim portion with an The lower surfaces ofcams 26, 26 are serrated 55 or roughened at 34, whereby to effect africtional contact with the upper surface of bridge l6.

A central aperture 35 is made through the upper surface of cap 26 forthe projection of a piston rod 36 that extends down through an alignedaperture made in bridge member IE to engage a piston 31 operating incylinder 39. There is also an outlet pipe that extends down to nearlythe bottom portion 5| of the container in order to insure emptying thecontents thereof when the sprayer is in use. The upper end of saidoutlet pipe 56 projects up through a central aperture in nipple 52. Aring 53 is used to hold the pipe 50 to the inside of container l asshown and described more particularly in my former Patent No. 1,971,727issued August 28, i934.

A handle 38 is screw mounted to' the upperend of piston rod 36. Handle381 is made to engage in a detachable manner the upper surface of cap26, whereby to turn not only said cap 20 on and off throat H but also tobe used in carrying the sprayer. To this end a disc 40 is formedintegral with the lower part of handle 38. Two diamete ricallyoppositely disposed depending L shaped teeth 4|, 4| are formed integralwith the lower surface of disc 40. Said L shaped teeth 4|, 4| areadapted to engage the upper surface of cap 26 by being projected throughsuitable apertures 42, 42 made therein for this purpose.

Each of the apertures 42, 42 is are shaped and provided with oppositelydisposed offset openings 43, 43 for the insertion of L shaped teeth 4|,4|, whereupon handle 38 is turned to cause the horizontal parts of Lshaped teeth 4|, 4| to engage the under surface of raised portions 45,45 formed integral with the upper surface of cap 26. Said raisedportions 45, 45 provide upward countersunk recesses 44, 44, whereby tolocalize the position of teeth 4|, 4| when therein. It will be observedthat there are two sets of raised portions 45, 45 to allow the handle tobe turned either to the right or left and engage a set 45, 45. I

In operation the user will turn and tip removable cover 6 at rightangles to its normal position with reference to the overhanging top part3 of container In this position of cover 6 it can be inserted withincontainer I. Bridge member H5 is mounted in place by inserting itscentral aperture over piston rod 36 before handle member 38 is screwmounted to its upper end or cap 20 screw mounted in place. Bridge memberI6 is then dropped down in position within the opposite recesses l5, l5in throat l4 and against the upper end of coiled spring '25.

Handle 38 is lowered with the L shaped hooks 4|, 4| opposite the offsetrecesses 43, 43 in the top of cap 26. It is turned then to the'right toengage the upward countersunk recesses 44, 44 in cap l4 and then turnedfurther to screw cap 26 upon its threads I! in throat l4, whereby todraw removable cover 6 upward into sealed position. Depending cam skirts26, 26 formed on 6 downward,

rim 3 to hold said bridge member l6 and cover 6 from turning relative torim 3.

When removing detachable cover 6 handle 38 will be turned to theopposite set of upwardly countersunk recess 44, 44 in cap 26' beforestarting to unscrew cap 20 with the aid of said handle 38.

The upper end of piston rod 36 is screw mounted in a suitably threadedcountersunk aperture in disc 40 of handle 38.

Having thus described my invention what I claim as new and desire tosecure by Letters Patent is as follows:

1. In a pressure and sealing device for containers, a casing having anoval opening at its top portion, a removable member suspended Withinsaid casing, whereby to fit and close said opening, an annular neckportion formed on said removable member, a cap member screw mounted tosaid neck portion, said neck portion having recesses formed therein, abridge piece engaging said cap member and fitting within said recessesand a cam formed in said cap member, whereby the turning of said capmember will cause said cam to press against said bridge piece to drawthe removable member into sealing position.

2. In a pressure and sealing device for containers, a casing having anoval opening at its top portion, an oval :shaped removable membersuspended within said casing, whereby to fit and close said opening, anannular neck I portion formed on said removable member, a cap memberscrew mounted to said neck portion, said neck portion having recessesformed therein, a bridge piece engaging said cap member and fittingwithing said recesses and a cam formed in said cap member, whereby theturning of said cap member will cause said cam to press against saidbridge piece to draw the removable member into sealing position, arubber gasket mounted on said removable member and a coiled springmounted between said removable member and said bridge piece to aid inseparating said removable member from said bridge piece.

3. In a pressure and sealing device for containers, a casing having anopening at its top portion, an-oval shaped removable member suspendedwithin said casing, whereby to fit and close said opening, an annularneck portion formed on said removable member, a cap member screw mountedto said neck portion, said neck portion having recesses formed therein,a bridge piece engaging said cap member and fitting with said recessesand a .cam means formed in said 'cap member, whereby the turning of saidcap member will cause said cam means to press against said bridge pieceto draw the removable member into sealing position, a groove formed insaid removable member, a rubber gasket mounted in said groove, a ridgeformed on said top portion and contacting with said rubber gasket and acoiled spring disposed between said bridge member and said removablemember, whereby to aid in separating said removable member from saidbridge piece.

WILLIAM C. PARROT'I.

